DO NOT MERGE - Backport RLZ code to GB:
  - Cache RLZ parameter
  - Set RLZ parameter for address bar searches
  - Add broadcast receiver to handle RLZ updates
  - Update RLZ parameters in home page and bookmarks
Bug: 4436761

Change-Id: I7ce0e7bead7954ed9ebfe10b66242553f14ed6f2
diff --git a/src/com/android/browser/UrlUtils.java b/src/com/android/browser/UrlUtils.java
new file mode 100644
index 0000000..56b4f2e
--- /dev/null
+++ b/src/com/android/browser/UrlUtils.java
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.browser;
+
+import android.net.Uri;
+
+/**
+ * Utility methods for Url manipulation
+ */
+public class UrlUtils {
+    // Determine if this URI appears to be a Google property
+    /* package */ static boolean isGoogleUri(Uri uri) {
+        String scheme = uri.getScheme();
+        if (!"http".equals(scheme) && !"https".equals(scheme)) {
+            return false;
+        }
+
+        String host = uri.getHost();
+        if (host == null) {
+            return false;
+        }
+        String[] hostComponents = host.split("\\.");
+        if (hostComponents.length < 2) {
+            return false;
+        }
+
+        int googleComponent = hostComponents.length - 2;
+        String component = hostComponents[googleComponent];
+        if (!"google".equals(component)) {
+            if (hostComponents.length < 3 ||
+                (!"co".equals(component) && !"com".equals(component))) {
+                return false;
+            }
+            googleComponent = hostComponents.length - 3;
+            if (!"google".equals(hostComponents[googleComponent])) {
+                return false;
+            }
+        }
+        return true;
+    }
+}